Full Technical Description: Circuit Breaking, Compressor, Conveyor, Motor Generator Set, Polarized, Welder Type; Natural Finished Copper Free Aluminum Material; 1.875 Inch min. Cable Outer Diameter; 2.5 Inch Max. Cable Outer Diameter; 3 Wire(S); UL 1682/1686, CSA C22.2, CE Approval; 600 VAC at 50 to 400 Hz, 250 VDC Voltage Rating; 400 Ampere Current Rating; 4 Pole(S); Corrosion Resistant, Dirttight, Dusttight, Moisture Resistant, Weatherproof; 2, Shell, Extra Pole Grounding Style; ARKTITE[R] Brand; Size 14-3/4 Inch L X 6-3/4 Inch W; Enclosure NEMA 3R; Application Chemical Plant, Heating and Cooling Unit, Lighting System, Manufacturing Plant, Meat Packing Plant, Process Industry; Includes Cable Grip, Neoprene Bushing; AP Model